A three dimensional crossword puzzle is difficult to do on paper [and from my experience is even harder to do in this program! - Swizzle]. This new game type is made possible by the CyberSpace Cruiser engine which lets a user maneuver through 3d space to see all sides of the puzzle structure. Simply click on a cell and key in a letter. Clues are shown (as applicable) in the text box in the lower right corner of the window. The first level is easy, and when it is correct, the next level will be displayed automatically.